Region-of-interest coding with background skipping for video telephony

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EP 2 046 048 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	24.07.2013 Bulletin 2013/30

(43)	Date of publication A2:
	08.04.2009 Bulletin 2009/15

(21)	Application number: 08020959.6

(22)	Date of filing: 28.02.2006

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International Patent Classification (IPC):

H04N 7/26^(2006.01)

H04N 7/46^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

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Priority:

01.03.2005 US 658008 P
09.08.2005 US 199937

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	06721122.7 / 1854302

(71)	Applicant: Qualcomm Incorporated
	San Diego, CA 92121-1714 (US)

(72)	Inventors:
	Wang, Haohong San Diego California 92121-1714 (US) El-Maleh, Khaled, Helmi San Diego California 92121-1714 (US)

(74)	Representative: Lowe, Alastair Nicholas et al
	RGC Jenkins & Co 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)

(54)	Region-of-interest coding with background skipping for video telephony

(57) A method comprising:
grouping successive video frames into a frame unit;
encoding regions of interest (38, 40) within the respective frames in the frame unit; and
skipping encoding of areas (43) that are not within a respective region of interest for at least one of the frames in the frame unit;

wherein encoding includes allocating rho domain values to macroblocks within the frame based on a frame budget and a weighting between macroblocks within the region of interest and macroblocks within areas of the video frame that are not within the region of interest.

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